Sentry Bot

The Sentry Bot is a Defensive Structure that deploys special Bomb Bots toward enemy Troops. Sentry Bots are invisble to enemy Troops until activated. They also automatically activate and becomes visible after the Palace is destroyed or destroys 50% of the Kingdom. They do create a visible Deployment Zone, and can be located if they are by themselves.

A Bomb Bot does splash damage, which affects more than one opponent. Keeping the Sentry Bot near places were many troops would be spawned would be a good strategy to knock out as many troops as possible.